Step left foot back into a reverse lunge and lower down, keeping knee behind toe, back tall, arms at sides.

Push off the right heel, lift left knee up in front of body, and hold for a brief second.

Step forward with the left leg into a forward lunge, lower down, keeping knee behind toe, back tall, arms at sides.

Push off right heel, lift knee up, hold for a brief second, and step back into that reverse lunge. Continue to move through the forward and reverse lunge pattern for 1 minute on that left leg. Switch sides. Aim for 2 sets on each leg.